/**
 * @Author ZhangGJ
 * @Date 2021/01/24 08:37
 */

#include <stdio.h>

int main(void) {
    int month, day, year;

    printf("Enter date (mm/dd/yy): ");
    scanf("%d /%d /%d", &month, &day, &year);

    printf("Dated this %d", day);
    switch (day) {
        case 1:
        case 21:
        case 31:
            printf("st");
            break;
        case 2:
        case 22:
            printf("nd");
            break;
        case 3:
        case 23:
            printf("rd");
            break;
        default:
            printf("th");
            break;
    }
    printf(" day of ");

    switch (month) {
        case 1:
            printf("January");
            break;
        case 2:
            printf("February");
            break;
        case 3:
            printf("March");
            break;
        case 4:
            printf("April");
            break;
        case 5:
            printf("May");
            break;
        case 6:
            printf("June");
            break;
        case 7:
            printf("July");
            break;
        case 8:
            printf("August");
            break;
        case 9:
            printf("September");
            break;
        case 10:
            printf("October");
            break;
        case 11:
            printf("November");
            break;
        case 12:
            printf("December");
            break;
    }

    printf(", 20%.2d.\n", year);
    return 0;
}
